Ancient Aliens: Government Whistleblowers Expose Underground Pyramids (Season 20)

For more than four decades, award-winning journalist Linda Moulton Howe has covered the most mysterious phenomena on Earth. See more in this scene from Season 20, Episode 18, “The Linda Moulton Howe Files.”

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“Ancient Aliens” explores the controversial theory that extraterrestrials have visited Earth for millions of years.

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